Plunger carrier for glassware forming apparatus



July 3, 1945. -0. H. SAMUELSON EIAL, 2,379,330 A PLUNGER CARRIER FOR GLASSWARE FORMING APPARATUS Filed Mai-ch 8, 1944 V 2 Sheets-Sheet 1 IIIIH I INVENTOR. I Y OTTOHJA/W/[LSOM By A/WHO/W/TZfl/P/A ATTORA [W y 9 l o. |-1.sAM uELsoN"i- -rAL 2,379,830

PIJUNGER CARRIER FOR GLASSWARE FORMING APPARATUS Filed Match 8, 1944 2 Sheets-Sheet 2 l 8 16 I I] l 17 IN V EN TOR.

Patented July 3, 1945- 'UNI'TED STATE s PATENT OFFTICE PLUNGER CARRIER FOR GLAS'SWARE FORMING APPARATUS Otto H. Samuelson, Muncle, and Anthony T. Zappia, Indianapolis, Ind.

Application March a, 1944, Serial No. 525,526 (01. 49-16) 4 Claims.

The present invention relates to improvements in glassware formingapparatus and particularly to glassware forming apparatus for manufacturing hollow glass containers.

In the manufacture of hollow'glass containers, the charge of glass is introduced into the blank or parison mold and this charge is compacted in the mold by applying suction around the mouthforming pin. This pin is projected into and retracted from the'neck mold by suitable projection apparatus and while the pin is in its projected position, the suction may be applied to the mold and after the pin has been retracted pressure may be applied to elongate the cavity formed in the parison by the mouth forming pin.

One 01' the difliculties heretofore experienced in this class of apparatus is to provide a suitable mechanism for projecting and retracting the pin plunger box 5 so as to align accurately the neck molds and the mouth forming pin.

The forming pin 6 is mounted on the end of a plunger 1 operating within the plunger, box 5 and i thi plunger is mounted on the end of a plunger stem 8, operating in a guide sleeve 9. The plunger.

1 may be provided with a socket in its lower end to receive ,the upper end of the stem 8 with a pin [0 passing through both to secure the two parts together. This sleeve ii is secured on the under face of the ring II with which the face of the sleeve 5 makes intimate contact when the parison mold is positioned and-this plunger stem 8 is raised and lowered by reciprocating cam member I! adapted to engage the lower end of the stem 8.

The guide sleeve 9 is provided with ears l3 having notched openings ll therein by which the guidesleeve 9 may be securely clamped in position, by

mouth forming pin into the neck forming mold withoutithe loss of the partial vacuum created or without reduction of the pressure,

It is one of the objects or our invention to provide a pin plunger structure which may move" with a minimum dropping 01 either vacuum or pressure and to provide a pin plunger stem-which may be readily substituted for the pin' plunger stemnow in use on certain types of commercialmachines and which will avoid the wear and destruction oi the present type of pin plunger stem.

For the purpose of disclosingour invention,

' we have illustrated an embodiment thereof in the'accompanyingdrawings in which: 4 'Fig. 1 is a longitudinal-section or so much or mouth forming pin into and-out or position means of cap screws! ring I]. a

The plunger stem 8 is biased in its retracted position through the medium of a spring I! surv the structure including the sleeve, however, are

a'parison mold as is n for disclosing our invention:

Fig. 2 is a longitudinal sectional view or the pin plunger-assembly; and

- Fig. 3 is aplan inPig. 1.-

In the illustration,- the parison'mold I is pref-' view of the structure illustrated erably of the well known sectional-type comprising opposed sections pivotally mounted, on a hinge pin =(not'shown). ,Suitable links-or connections (not shown) are provided for opening and closing the mold section I in the usual manner. V

Adjacent the neck end of the parison mold are sectional mold sections 2, providing when closed.

a neck mold cavity tor-shaping the neck and month end of the article. The neck mold sections are supported in neck mold holders I and these holdersmaybe groovedas at! to embrace. the flanged ends I of asleeveormouth forming preferably formed of cast iron. That otthestem below this rim II is provided with a rounded, semi-spherical, hardened end 19 -'adapted to contact with the cam 12 and adapted to slide over the cam during the rotative movement of the parts which maintains the plunger in position to set the glass in the pari'son finish.

This cam I2 is raised and lowered. by suitable raising and lowering mechanism (not shown),

and to insure the stem 8 following the cam in its movement to provide a hook Ill, secured to the cam and engaging over the rim l8 and so spaced over the cam was the stem moves into position, the ring ll-will be moved beneath the hook 20.

' This hook II is provided to insure the retraction of the stem in event the spring I5 tails to act. Being secured on the cam II it will, upon lowering thecam,en gage the rim It and retract the stem as the cam I2 is lowered.

In view of the fact that through a suitable port 22 suction is applied to the neck mold and later at the next station pressure is admitted through 4', to the under side of the ring n is provided a retracting r'irnj against longitudinal movement on the g the port 2 l, to the neck mold, it is ex treinely important that there is no leakage around the stem 8. To this end, we provide a suitable piston ring aava sso 2s, fitting within a groove in'the sleeve, and

a plunger pin stem operatingwithin said sleeve having a hardened semi-spherical bottom end, adapted for engagement with the raising; and

lowering cam for the i'orming' pin, and a piston v ring surrounding said stem within said sleeve for forming a substantially air-tight junction be'-' tween said stern and the walls oi said'sieeve.

2. A plunger stem ior operating the formingto. the forming pin plunger box through the medium'oi said flange. a plungerpin operating pin plunger of a parison mold of a glassware 1 forming apparatus, comprising a guide sleeve having ears, means for detachably securing said sleeve through the medium of said ears to the forming pin plunger box, a plunger pin steni operating within said sleeve having agoundedhard-- ened ball end adapted for engagement with the raising and lowering cam for theforming pin and having a hardened ball end for engagement with the raising and lowering cam for the forming pin; a collar surrounding said stem below said sleeve,

means fonholdlng said collar against vertical disv 1 placement in one direction and a coiled spring surrounding said sleeve andengaging said collar to'bias the stem in its retracted-position and a piston surrounding said stem within said sleeve ion-forming a substantially air-tight junction .between'said stem and the"walls of said sleeve.

pin -plunger.-ofa -parison mold of a glassware iom ingyapparatusg; comprising a guide sleeve having a flange, n eansior securing said sleeve within'said'sleevehaving a hardened ball end {or engagement with the raising and lowering cam for the forming pin, a piston ring surrounding said stemiwithin said; sleeve ior iorminga substantially air-tight junctionbetween said stem and the walls of said sleeve, a-collar secured on a piston ring surrounding-said stem within said sleeve for forming a substantially airtight lune tion between" said stem and the walls oi said sleeve. I

3. A plunger stem for operating the forming pin plunger of a parison mold'oi' aglassware formingapparatus, comprising a guide sleeve detachablyi secured to theiormingpin plunger box,

a plunger pinstem operating-within said sleeve andioweringcam;

said stem against vertical displacement in directioma coiled spring surrounding said sleeve and-interposed between said flange and collar {or biasing said stem-in its retracted positionand a second collar secured tosaid stem below saidhrstzmentioned collar and held against vertical displacement on said stem and adaptedior engagement for a. retracting member on a raising is. su s. ANTHONY 'I'.-ZAPPIA.

commcrron. a

hormon smear-son; ET AL;

Iit' is herebpi'gce'rtifiedfhat error appears .in-the printed-specification of theiabove'm irqhered patent requiring correction as follows: Page 1, second'colunn, Line M, for "to". before "provide" 'read -v-- -we-- an h said Letters Patent amid be read with this correction therein that as same may conform to the record-or the case in the ntent Office. [si ed and sea1od this l1th day 01-S t mb r, A n. 19 5.

i s eal) v I Leslie Frazer First Assistant emissions:- or Pram.

4; A plunger stem for operating the forming the port 2 l, to the neck mold, it is ex treinely important that there is no leakage around the stem 8. To this end, we provide a suitable piston ring aava sso 2s, fitting within a groove in'the sleeve, and

a plunger pin stem operatingwithin said sleeve having a hardened semi-spherical bottom end, adapted for engagement with the raising; and

lowering cam for the i'orming' pin, and a piston v ring surrounding said stem within said sleeve for forming a substantially air-tight junction be'-' tween said stern and the walls oi said'sieeve.

2. A plunger stem ior operating the formingto. the forming pin plunger box through the medium'oi said flange. a plungerpin operating pin plunger of a parison mold of a glassware 1 forming apparatus, comprising a guide sleeve having ears, means for detachably securing said sleeve through the medium of said ears to the forming pin plunger box, a plunger pin steni operating within said sleeve having agoundedhard-- ened ball end adapted for engagement with the raising and lowering cam for theforming pin and having a hardened ball end for engagement with the raising and lowering cam for the forming pin; a collar surrounding said stem below said sleeve,

means fonholdlng said collar against vertical disv 1 placement in one direction and a coiled spring surrounding said sleeve andengaging said collar to'bias the stem in its retracted-position and a piston surrounding said stem within said sleeve ion-forming a substantially air-tight junction .between'said stem and the"walls of said sleeve.

pin -plunger.-ofa -parison mold of a glassware iom ingyapparatusg; comprising a guide sleeve having a flange, n eansior securing said sleeve within'said'sleevehaving a hardened ball end {or engagement with the raising and lowering cam for the forming pin, a piston ring surrounding said stemiwithin said; sleeve ior iorminga substantially air-tight junctionbetween said stem and the walls of said sleeve, a-collar secured on a piston ring surrounding-said stem within said sleeve for forming a substantially airtight lune tion between" said stem and the walls oi said sleeve. I

3. A plunger stem for operating the forming pin plunger of a parison mold'oi' aglassware formingapparatus, comprising a guide sleeve detachablyi secured to theiormingpin plunger box,

a plunger pinstem operating-within said sleeve andioweringcam;

said stem against vertical displacement in directioma coiled spring surrounding said sleeve and-interposed between said flange and collar {or biasing said stem-in its retracted positionand a second collar secured tosaid stem below saidhrstzmentioned collar and held against vertical displacement on said stem and adaptedior engagement for a. retracting member on a raising is. su s. ANTHONY 'I'.-ZAPPIA.

commcrron. a

hormon smear-son; ET AL;

Iit' is herebpi'gce'rtifiedfhat error appears .in-the printed-specification of theiabove'm irqhered patent requiring correction as follows: Page 1, second'colunn, Line M, for "to". before "provide" 'read -v-- -we-- an h said Letters Patent amid be read with this correction therein that as same may conform to the record-or the case in the ntent Office. [si ed and sea1od this l1th day 01-S t mb r, A n. 19 5.

i s eal) v I Leslie Frazer First Assistant emissions:- or Pram.

4; A plunger stem for operating the forming 

